There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
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2020年的時候，關恆前往新疆秘密拍攝「再教育營」的設施，並於2021年離開中國、前往美國途中將影片發佈，為國際人權調查提供了重要的佐證。，这一点在safew官方版本下载中也有详细论述
System 2. A beautifully orange brochure tells us:
说白了，一个 Skills 专家的应用商店雏形，已经摆在我们面前了。